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Re-enable auto statistics for ClickHouse #2047

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f6e7621
{clickhouse,clickhouse-tencent}/create.sql: re-enable auto statistics
alexey-milovidov Sep 16, 2026
d06a33a
Add benchmark results for clickhouse (c6a.2xlarge, c6a.4xlarge, c6a.m…
github-actions[bot] Sep 17, 2026
5f22667
Add benchmark results for clickhouse (c6a.large)
github-actions[bot] Sep 17, 2026
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3 changes: 1 addition & 2 deletions clickhouse-tencent/create.sql
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Original file line number Diff line number Diff line change
Expand Up @@ -108,5 +108,4 @@ CREATE OR REPLACE TABLE hits
PRIMARY KEY (CounterID, EventDate, UserID, EventTime, WatchID)
)
ENGINE = MergeTree
SETTINGS fsync_after_insert = 1, -- https://github.com/ClickHouse/ClickBench/issues/678
auto_statistics_types = ''; -- see clickhouse/create.sql for the rationale
SETTINGS fsync_after_insert = 1; -- https://github.com/ClickHouse/ClickBench/issues/678
3 changes: 1 addition & 2 deletions clickhouse/create.sql
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Original file line number Diff line number Diff line change
Expand Up @@ -108,5 +108,4 @@ CREATE OR REPLACE TABLE hits
PRIMARY KEY (CounterID, EventDate, UserID, EventTime, WatchID)
)
ENGINE = MergeTree
SETTINGS fsync_after_insert = 1, -- https://github.com/ClickHouse/ClickBench/issues/678
auto_statistics_types = ''; -- per-column uniqState blobs grow with cardinality (~140 KB for high-card columns × ~30 such columns ≈ 4 MB per part of statistics.packed). Cold queries pay the load cost before cached_estimator is populated by the bg refresh task. Disabling stops the auto-stats files from being created on merge.
SETTINGS fsync_after_insert = 1; -- https://github.com/ClickHouse/ClickBench/issues/678
60 changes: 60 additions & 0 deletions clickhouse/results/20260917/c6a.2xlarge.json
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{
"system": "ClickHouse",
"date": "2026-09-17",
"machine": "c6a.2xlarge",
"cluster_size": 1,
"proprietary": "no",
"hardware": "cpu",
"tuned": "no",
"tags": ["C++","column-oriented","ClickHouse derivative"],
"load_time": 240,
"data_size": 9436618859,
"concurrent_qps": 0.49,
"concurrent_error_ratio": 0.049,
"result": [
[0.001, 0.001, 0.001],
[0.041, 0.001, 0.001],
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[1.747, 0.09, 0.089],
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[2.222, 0.917, 0.855],
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[3.582, 1.033, 1.001],
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[2.14, 0.491, 0.449],
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[0.876, 0.136, 0.13],
[0.363, 0.021, 0.024],
[0.402, 0.019, 0.033],
[0.264, 0.014, 0.015]
]
}

60 changes: 60 additions & 0 deletions clickhouse/results/20260917/c6a.4xlarge.json
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{
"system": "ClickHouse",
"date": "2026-09-17",
"machine": "c6a.4xlarge",
"cluster_size": 1,
"proprietary": "no",
"hardware": "cpu",
"tuned": "no",
"tags": ["C++","column-oriented","ClickHouse derivative"],
"load_time": 215,
"data_size": 9420220381,
"concurrent_qps": 1.467,
"concurrent_error_ratio": 0.001,
"result": [
[0.001, 0.001, 0.001],
[0.001, 0.001, 0.031],
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[0.02, 0.002, 0.002],
[0.112, 0.011, 0.011],
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]
}

60 changes: 60 additions & 0 deletions clickhouse/results/20260917/c6a.large.json
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{
"system": "ClickHouse",
"date": "2026-09-17",
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"cluster_size": 1,
"proprietary": "no",
"hardware": "cpu",
"tuned": "no",
"tags": ["C++","column-oriented","ClickHouse derivative"],
"load_time": 678,
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"concurrent_qps": 0.145,
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]
}

60 changes: 60 additions & 0 deletions clickhouse/results/20260917/c6a.metal.json
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{
"system": "ClickHouse",
"date": "2026-09-17",
"machine": "c6a.metal",
"cluster_size": 1,
"proprietary": "no",
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"tuned": "no",
"tags": ["C++","column-oriented","ClickHouse derivative"],
"load_time": 152,
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"concurrent_error_ratio": 0,
"result": [
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[1.356, 0.101, 0.096],
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[0.156, 0.01, 0.01],
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]
}

60 changes: 60 additions & 0 deletions clickhouse/results/20260917/c6a.xlarge.json
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{
"system": "ClickHouse",
"date": "2026-09-17",
"machine": "c6a.xlarge",
"cluster_size": 1,
"proprietary": "no",
"hardware": "cpu",
"tuned": "no",
"tags": ["C++","column-oriented","ClickHouse derivative"],
"load_time": 287,
"data_size": 9421091136,
"concurrent_qps": 0.402,
"concurrent_error_ratio": 0.073,
"result": [
[0.003, 0.002, 0.002],
[0.003, 0.002, 0.002],
[1.027, 0.154, 0.163],
[1.385, 0.194, 0.197],
[2.133, 0.935, 0.873],
[2.991, 1.956, 2.113],
[0.08, 0.005, 0.008],
[0.627, 0.054, 0.053],
[2.98, 1.746, 1.899],
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]
}

60 changes: 60 additions & 0 deletions clickhouse/results/20260917/c7a.metal-48xl.json
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{
"system": "ClickHouse",
"date": "2026-09-17",
"machine": "c7a.metal-48xl",
"cluster_size": 1,
"proprietary": "no",
"hardware": "cpu",
"tuned": "no",
"tags": ["C++","column-oriented","ClickHouse derivative"],
"load_time": 166,
"data_size": 9530158877,
"concurrent_qps": 27.903,
"concurrent_error_ratio": 0,
"result": [
[0.002, 0.002, 0.002],
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[0.207, 0.012, 0.013]
]
}

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